A running toilet is not only annoying but can also waste a significant amount of water, increasing your utility bills. Thankfully, fixing a running toilet is usually a simple DIY task. This article will guide you through three effective methods to stop your toilet from running unnecessarily.

1. Adjust the Flapper Chain

The length of the flapper chain is crucial for proper toilet function. If the chain is too short, it might not allow the flapper to close fully, causing the toilet to run. Conversely, a chain that’s too long can get tangled or not lift the flapper high enough to allow a full flush. Adjust the chain so that it has just a bit of slack when the flapper is closed, ensuring it can seal properly and not let water leak into the bowl​ (Apartment Therapy)​.

2. Replace the Flapper

If adjusting the chain does not solve the problem, the next step is to inspect and possibly replace the flapper. Over time, flappers can become warped or damaged, which prevents them from sealing the drain hole at the bottom of the tank. Check the flapper for any signs of wear or damage, and if necessary, replace it with a new one that matches the specifications of your toilet. This is often a quick fix that can resolve the issue of a running toilet​ (Apartment Therapy)​​ (Family Handyman)​.

3. Check and Replace the Fill Valve

The fill valve controls the water level in the tank. If it’s faulty, water may continue to fill the tank, causing overflow or constant running. First, check if adjusting the valve solves the issue. If the toilet continues to run, consider replacing the fill valve. This involves turning off the water supply, draining the tank, and installing a new valve. Make sure to follow the manufacturer’s instructions for installation to ensure the new valve functions correctly​ (Home Depot)​​ (Family Handyman)​.